JOAN H. MASS MD
NPI 1295708162
Internal Medicine in Saint Charles, MO

Q: What is Joan Mass's NPI number?

The NPI number for Joan Mass is 1295708162. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Q: What is Joan Mass's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Joan Mass was last updated on May 4, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 09, 2006PECOS Enrolled

300 1ST CAPITOL DR, SAINT CHARLES, MO 63301(636) 947-5000(314) 317-0606 Get Directions Write a Review

NPPES record last updated: May 4, 2012. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Joan H. Mass Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOAN H. MASS MD (NPI 1295708162) is an individual internal medicine provider in Saint Charles, Missouri, licensed in Missouri (R9A66) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295708162

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameJOAN H. MASSCredential: MD

Location Address300 1ST CAPITOL DRSaint Charles, MO 63301-2844

Mailing Address12125 Woodcrest Executive Dr, Suite 220Saint Louis, MO 63141-5001 · (314) 317-0600 · Fax (314) 317-0606

Phone(636) 947-5000

Fax(314) 317-0606

Sole ProprietorNo

Enumeration DateFebruary 9, 2006

Last NPPES UpdateMay 4, 2012

✔ NPI 1295708162 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MO · R9A66

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License R9A66 (MO)

300 1ST CAPITOL DR, Saint Charles, MO 63301

Open in Google Maps ↗

Other Identifiers 3

Medicare PIN000095538MO

Medicaid207941121MO

Medicaid1295708162IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Joan H. Mass Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan

Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…

100%49 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATHLEEN F. CHRISTLIEB PA

Physician Assistant